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See detailQuand nier, c'est agir. Vers une définition de la "textualité négative"
Colas-Blaise, Marion UL

in Nouveaux Actes Sémiotiques (2014), 117

Detailed reference viewed: 83 (1 UL)
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See detailQuand petites start-ups et grands groupes coopèrent: David et Goliath revisités
Gundolf, Katherine; Geraudel, Mickaël UL

Article for general public (2016)

Detailed reference viewed: 47 (2 UL)
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See detailQuand une image est-elle spectaculaire ?
Tore, Gian Maria UL

in Degrés : Revue de Synthèse à Orientation Sémiologique (2012)

Detailed reference viewed: 34 (3 UL)
See detailQuando o passado e o presente se encontram pela rua
Lucchesi, Anita UL

in Maynard, Dilton Cândido Santos (Ed.) Getempo: memórias de uma coluna na Internet. (2015)

Detailed reference viewed: 36 (0 UL)
See detailQuantification in Non-classical Logics
Gabbay, Dov M. UL; Shehtman, V.; Skvortsov, D.

Book published by Elsevier (2009)

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See detailQuantification of Financial News for Economic Surveys
Minev, Mihail UL

in International Conference on Data Mining Workshops (2013, December)

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See detailQuantification of finite-temperature effects on adsorption geometries of π-conjugated molecules: Azobenzene/Ag(111)
Mercurio, G.; Maurer, R. J.; Liu, W. et al

in Physical Review B - Condensed Matter and Materials Physics (2013), 88(3),

The adsorption structure of the molecular switch azobenzene on Ag(111) is investigated by a combination of normal incidence x-ray standing waves and dispersion-corrected density functional theory. The ... [more ▼]

The adsorption structure of the molecular switch azobenzene on Ag(111) is investigated by a combination of normal incidence x-ray standing waves and dispersion-corrected density functional theory. The inclusion of nonlocal collective substrate response (screening) in the dispersion correction improves the description of dense monolayers of azobenzene, which exhibit a substantial torsion of the molecule. Nevertheless, for a quantitative agreement with experiment explicit consideration of the effect of vibrational mode anharmonicity on the adsorption geometry is crucial. © 2013 American Physical Society. [less ▲]

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See detailQuantification of Stable Isotope Traces Close to Natural Enrichment in Human Plasma Metabolites Using Gas Chromatography-Mass Spectrometry
Krämer, Lisa; Jäger, Christian UL; Trezzi, Jean-Pierre UL et al

in Metabolites (2018), 8(1), 15

Currently, changes in metabolic fluxes following consumption of stable isotope-enriched foods are usually limited to the analysis of postprandial kinetics of glucose. Kinetic information on a larger ... [more ▼]

Currently, changes in metabolic fluxes following consumption of stable isotope-enriched foods are usually limited to the analysis of postprandial kinetics of glucose. Kinetic information on a larger diversity of metabolites is often lacking, mainly due to the marginal percentage of fully isotopically enriched plant material in the administered food product, and hence, an even weaker 13C enrichment in downstream plasma metabolites. Therefore, we developed an analytical workflow to determine weak 13C enrichments of diverse plasma metabolites with conventional gas chromatography-mass spectrometry (GC-MS). The limit of quantification was increased by optimizing (1) the metabolite extraction from plasma, (2) the GC-MS measurement, and (3) most importantly, the computational data processing. We applied our workflow to study the catabolic dynamics of 13C-enriched wheat bread in three human subjects. For that purpose, we collected time-resolved human plasma samples at 16 timepoints after the consumption of 13C-labeled bread and quantified 13C enrichment of 12 metabolites (glucose, lactate, alanine, glycine, serine, citrate, glutamate, glutamine, valine, isoleucine, tyrosine, and threonine). Based on isotopomer specific analysis, we were able to distinguish catabolic profiles of starch and protein hydrolysis. More generally, our study highlights that conventional GC-MS equipment is sufficient to detect isotope traces below 1% if an appropriate data processing is integrated. [less ▲]

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See detailQuantification of surface ZnSe in Cu2ZnSnSe4-based solar cells by analysis of the spectral response
Colombara, Diego UL; Robert, Erika UL; Crossay, Alexandre UL et al

in Solar Energy Materials & Solar Cells (2014), 123

Absorber layers consisting of Cu2ZnSnSe4 (CZTSe) and surface ZnSe in variable ratios were prepared by selenization of electroplated Cu/Sn/Zn precursors and completed into full devices with up to 5.6 ... [more ▼]

Absorber layers consisting of Cu2ZnSnSe4 (CZTSe) and surface ZnSe in variable ratios were prepared by selenization of electroplated Cu/Sn/Zn precursors and completed into full devices with up to 5.6 % power conversion efficiency. The loss of short circuit current density for samples with increasing ZnSe content is consistent with an overall reduction of spectral response, pointing to a ZnSe current blocking behavior. A feature in the spectral response centered around 3 eV was identified and attributed to light absorption by ZnSe. A model is proposed to account for additional collection of the carriers generated underneath ZnSe capable of diffusing across to the space charge region. The model satisfactorily reproduces the shape of the spectral response and the estimated ZnSe surface coverage is in good qualitative agreement with analysis of the Raman spectral mapping. The model emphasizes the importance of the ZnSe morphology on the spectral response, and its consequences on the solar cell device performance. [less ▲]

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See detailQuantification of wild-type mitochondrial DNA and its 4.8-kb deletion in rat organs.
Filser, N.; Margue, Christiane UL; Richter, C.

in Biochemical and biophysical research communications (1997), 233(1), 102-7

Oxidative damage to mitochondrial DNA (mtDNA) is considered a major contributor in aging. An age-dependent increase of oxidative damage and of the quantity of partially deleted mtDNA was reported for ... [more ▼]

Oxidative damage to mitochondrial DNA (mtDNA) is considered a major contributor in aging. An age-dependent increase of oxidative damage and of the quantity of partially deleted mtDNA was reported for several rat and human organs. Here, a systematic investigation of ten different tissues and organs of 20-months-old rats was performed. The amount of mtDNA and age-dependent 4.8 kb deletion (delta mtDNA4834) was determined by competitive polymerase chain reaction, along with the activities of superoxide dismutase (SOD) and glutathione peroxidase (GSHPx). The data were related to the corresponding metabolic rates. MtDNA content was highest in heart and lowest in spleen. delta mtDNA4834 was detected in all ten tissues and organs, and its amount was highest in liver and lowest in intestine. In heart, lung, muscle, and bone-marrow the deletion could not be quantified because of a point mutation, an A-->T transition at position 8107. Activities of SOD and GSHPx were highest in liver and lowest in intestinal mucosa. A negative correlation between mtDNA content and delta mtDNA4834, and a positive correlation between metabolic rate, GSHPx, and the deletion was found. These results suggest that the occurrence of delta mtDNA4834 in rat is related to oxidative stress. [less ▲]

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See detailQuantification par déformation
Poncin, Norbert UL

Article for general public (2002)

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See detailQuantifications par déformations formelles et non formelles de la boule unité de C^n
Korvers, Stéphane UL

Doctoral thesis (2014)

À la frontière de domaines de recherche tels que la géométrie différentielle, l’analyse harmonique sur les espaces homogènes, les équations aux dérivées partielles ou la théorie des fonctions spéciales en ... [more ▼]

À la frontière de domaines de recherche tels que la géométrie différentielle, l’analyse harmonique sur les espaces homogènes, les équations aux dérivées partielles ou la théorie des fonctions spéciales en physique mathématique, cet ouvrage propose au lecteur de découvrir la quantification par déformation des domaines bornés homogènes complexes sous un nouveau jour. Une étude géométrique des nombreuses facettes de la boule unité de l’espace de n variables complexes comme brique élémentaire de ces domaines précède l’exposé des recherches menées par l’auteur dans le cadre de sa thèse de doctorat. Celles-ci visent notamment la réalisation explicite de l’ensemble des quantifications par déformations sur cette variété. À ces fins, il est montré qu’une telle réalisation se ramène à une hiérarchie d’équations aux dérivées partielles explicite dont certaines solutions définissent des opérateurs de convolution entrelaçant la théorie des déformations au niveau de la boule unité avec celle d’une contraction de courbure de cet espace. La résolution de ces équations est discutée sous plusieurs angles, laissant entrevoir de multiples perspectives à ce travail. [less ▲]

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See detailQuantifizierung und Visualisierung. Anknüpfungspunkte in den Geschichtswissenschaften
Kerschbaumer, Florian; During, Marten UL

in During, Marten; Eumann, Ulrich; Stark, Martin (Eds.) Handbuch Historische Netzwerkforschung (2016)

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See detailQuantifying and Localizing the Mitochondrial Proteome Across Five Tissues in A Mouse Population.
Williams, Evan UL; Wu, Yibo; Wolski, Witold et al

in Molecular and Cellular Proteomics (2018), 17(9), 1766-1777

We have used SWATH mass spectrometry to quantify 3648 proteins across 76 proteomes collected from genetically diverse BXD mouse strains in two fractions (mitochondria and total cell) from five tissues ... [more ▼]

We have used SWATH mass spectrometry to quantify 3648 proteins across 76 proteomes collected from genetically diverse BXD mouse strains in two fractions (mitochondria and total cell) from five tissues: liver, quadriceps, heart, brain, and brown adipose (BAT). Across tissues, expression covariation between genes' proteins and transcripts-measured in the same individuals-broadly aligned. Covariation was however far stronger in certain subsets than others: only 8% of transcripts in the lowest expression and variance quintile covaried with their protein, in contrast to 65% of transcripts in the highest quintiles. Key functional differences among the 3648 genes were also observed across tissues, with electron transport chain (ETC) genes particularly investigated. ETC complex proteins covary and form strong gene networks according to tissue, but their equivalent transcripts do not. Certain physiological consequences, such as the depletion of ATP synthase in BAT, are thus obscured in transcript data. Lastly, we compared the quantitative proteomic measurements between the total cell and mitochondrial fractions for the five tissues. The resulting enrichment score highlighted several hundred proteins which were strongly enriched in mitochondria, which included several dozen proteins were not reported in literature to be mitochondrially localized. Four of these candidates were selected for biochemical validation, where we found MTAP, SOAT2, and IMPDH2 to be localized inside the mitochondria, whereas ABCC6 was in the mitochondria-associated membrane. These findings demonstrate the synergies of a multi-omics approach to study complex metabolic processes, and this provides a resource for further discovery and analysis of proteoforms, modified proteins, and protein localization. [less ▲]

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See detailQuantifying crosstalk in biochemical systems
Yeung, Enoch; Kim, Jongmin; Yuan, Ye et al

in The proceedings of the 51st IEEE Conference on Decision and Control (2012)

Recent work has introduced biocircuit architectures that exhibit robust oscillatory behavior in organisms ranging from cyanobacteria to mammals. Complementary research in synthetic biology has introduced ... [more ▼]

Recent work has introduced biocircuit architectures that exhibit robust oscillatory behavior in organisms ranging from cyanobacteria to mammals. Complementary research in synthetic biology has introduced oscillators in vivo and in vitro suggesting that robust oscillation can be recapitulated using a small number of biochemical components. In this work, we introduce signaling crosstalk in biocircuits as a consequence of enzyme-mediated biochemical reactions. As a motivating example, we consider an in vitro oscillator with two types of crosstalk: crosstalk in production and degradation of RNA signals. We then propose a framework for quantifying crosstalk and use it to derive several dynamical constraints and suggest design techniques for ameliorating crosstalk in vitro biochemical systems. We demonstrate that the effects of crosstalk can be attenuated through the effective tuning of two key parameters in order to recover desired system dynamics. As an example, we show that by changing the balance between production and degradation crosstalk, we can tune a system to be stable or exhibit oscillatory behavior. [less ▲]

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See detailQuantifying disagreement in argument-based reasoning
Booth, Richard UL; Caminada, Martin UL; Podlaszewski, Mikołaj UL et al

in 11th International Conference on Autonomous Agents and Multiagent Systems (AAMAS 2012) (2012)

An argumentation framework can be seen as expressing, in an abstract way, the conflicting information of an underlying logical knowledge base. This conflicting information often allows for the presence of ... [more ▼]

An argumentation framework can be seen as expressing, in an abstract way, the conflicting information of an underlying logical knowledge base. This conflicting information often allows for the presence of more than one possible reasonable position (extension/labelling) which one can take. A relevant question, therefore, is how much these positions differ from each other. In the current paper, we will examine the issue of how to define meaningful measures of distance between the (complete) labellings of a given argumentation framework. We provide concrete distance measures based on argument-wise label difference, as well as based on the notion of critical sets, and examine their properties. [less ▲]

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See detailQuantifying disagreement in argument-based reasoning
Booth, Richard UL; Caminada, Martin UL; Podlaszewski, Mikołaj UL et al

Scientific Conference (2011)

Detailed reference viewed: 151 (3 UL)
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See detailQuantifying information flow in interactive systems
Mestel, David UL

in 2019 IEEE 32nd Computer Security Foundations Symposium (CSF) (2019)

We consider the problem of quantifying information flow in interactive systems, modelled as finite-state transducers in the style of Goguen and Meseguer. Our main result is that if the system is ... [more ▼]

We consider the problem of quantifying information flow in interactive systems, modelled as finite-state transducers in the style of Goguen and Meseguer. Our main result is that if the system is deterministic then the information flow is either logarithmic or linear, and there is a polynomial-time algorithm to distinguish the two cases and compute the rate of logarithmic flow. To achieve this we first extend the theory of information leakage through channels to the case of interactive systems, and establish a number of results which greatly simplify computation. We then show that for deterministic systems the information flow corresponds to the growth rate of antichains inside a certain regular language, a property called the width of the language. In a companion work we have shown that there is a dichotomy between polynomial and exponential antichain growth, and a polynomial time algorithm to distinguish the two cases and to compute the order of polynomial growth. We observe that these two cases correspond to logarithmic and linear information flow respectively. Finally, we formulate several attractive open problems, covering the cases of probabilistic systems, systems with more than two users and nondeterministic systems where the nondeterminism is assumed to be innocent rather than demonic. [less ▲]

Detailed reference viewed: 95 (6 UL)